A thermodynamic and kinetic investigation of amorphous (1−x)As2Se3 · xSb2Se3 alloys

Thermal investigation of GeSb2Se4 chalcogenide alloy glass

“…The heat associated with the glass transition is about 0.98 cal/g. This kind of behaviour of the annealed glasses at the glass transition is similar to those previously reported for arsenicselenium [5] and arsenic-antimony [6] alloy glasses, and may be characteristic of chalcogenide alloy glasses.…”

Structural relaxation due to sub-Tg annealing of Se98In1.5Sn0.5 chalcogenide glass

“…It is well known that chalcogenide glasses are characterized by a layer structure in which covalent bonding is restricted to two dimensions in the plane of the layer and with van der Waals forces in the third dimension. The calculated value of E is much larger than the energies of van der Waals bonds [34] but of the order of the bond energies of some of the constituent atoms, for instance, Se-In and Sn-Sn have bond energies of 59 ± 4 and 46.7 ± 4 kcal/mol, respectively [35]. It is reasonable to state that the relaxation process in the studied glass cannot be attributed to the sliding of atomic layers but occurs due to breaking of interchain weak bonds during annealing, which will reform after the relaxation is completed.…”

Simultaneous Measurements of Thermal Conductivity and Diffusivity of Se85-xTe15Sbx (x = 2, 4, 6, 8, and 10) Chalcogenide Glasses at Room Temperature

“…With the increase of Sb content, the glassy matrix becomes heavily crosslinked [12], and the steric hindrance increases. The Se-Se bonds (bond energy 205.8 kJ/mol) [13] will be replaced by Sb-Se bonds, which have a higher bond energy (214.2 kJ/mol). Hence the cohesive energy of the system increases with increasing Sb content.…”